:root {
  color-scheme: dark;
  --ink: #f5f0df;
  --muted: #b8b0a0;
  --panel: #1a1a1d;
  --panel-2: #222225;
  --line: rgba(245, 240, 223, 0.16);
  --teal: #19c2a0;
  --gold: #ffcf5a;
  --coral: #ff6b5f;
  --violet: #7c5cff;
  --charcoal: #111112;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--charcoal);
  color: var(--ink);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

button,
input {
  font: inherit;
}

button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--ink);
  cursor: pointer;
}

button:hover:not(:disabled) {
  border-color: var(--gold);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.app-shell {
  width: min(1240px, 100%);
  margin: 0 auto;
  padding: 22px;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(520px, 1.6fr);
  gap: 18px;
  align-items: end;
  margin-bottom: 16px;
}

.brand-block h1 {
  margin: 0;
  font-size: 42px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--gold);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.score-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(92px, 1fr));
  gap: 8px;
}

.score-strip div,
.meter-stack,
.date-row,
.result-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.score-strip div {
  min-height: 68px;
  padding: 12px;
}

.score-strip span,
.meter-stack span,
.date-row label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
}

.score-strip strong {
  display: block;
  font-size: 24px;
  line-height: 1.05;
}

.play-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 290px;
  gap: 16px;
  align-items: start;
}

.canvas-zone {
  min-width: 0;
}

#field {
  display: block;
  width: 100%;
  max-height: calc(100vh - 154px);
  min-height: 360px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--charcoal);
  touch-action: none;
}

.field-readout {
  min-height: 44px;
  margin-top: 10px;
  padding: 12px 14px;
  border-left: 4px solid var(--teal);
  background: #19191b;
  color: var(--ink);
}

.control-panel {
  display: grid;
  gap: 12px;
}

.date-row {
  display: grid;
  grid-template-columns: 1fr 94px;
  gap: 8px;
  padding: 12px;
}

.date-row label {
  grid-column: 1 / -1;
}

.date-row input {
  min-height: 42px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101012;
  color: var(--ink);
  padding: 0 10px;
}

.round-actions {
  display: grid;
  grid-template-columns: 1fr 96px;
  gap: 8px;
}

.primary-action {
  background: var(--teal);
  border-color: var(--teal);
  color: #071513;
  font-weight: 800;
}

.meter-stack {
  display: grid;
  grid-template-columns: 1fr 72px;
  gap: 12px;
  padding: 12px;
  align-items: center;
}

meter {
  width: 100%;
  height: 12px;
}

#grade-value {
  font-size: 28px;
  color: var(--gold);
}

.result-panel {
  padding: 14px;
}

.result-panel h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.result-panel p {
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.45;
}

.result-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

@media (max-width: 860px) {
  .app-shell {
    padding: 14px;
  }

  .topbar,
  .play-layout {
    grid-template-columns: 1fr;
  }

  .brand-block h1 {
    font-size: 34px;
  }

  .score-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .score-strip strong {
    font-size: 20px;
  }

  #field {
    max-height: none;
    min-height: 300px;
  }
}

@media (max-width: 430px) {
  .app-shell {
    padding: 10px;
  }

  .topbar {
    gap: 10px;
    margin-bottom: 10px;
  }

  .brand-block h1 {
    font-size: 30px;
  }

  .score-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .score-strip div {
    min-height: 58px;
    padding: 10px;
  }

  #field {
    min-height: 244px;
  }

  .round-actions,
  .result-actions {
    grid-template-columns: 1fr;
  }
}